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To: Joe NYC who wrote (151187)12/5/2001 3:03:53 PM
From: wanna_bmw  Read Replies (2) of 186894
 
Joe, Re: "Which single instruction do you know for sure is a complex instruction, so that we can use it in the test code (thus denying Piii the opportunity to use the simple decoder in parallel)?"

Most simple arithmatic instructions can be decoded using the simple decoders. The complex ones, such as transcendental functions like DIV or SQRT have a higher latency penalty on the Pentium 4, so that wouldn't really answer what you are trying to solve.

But keep trying. I'm sure that sooner or later, Kap's efforts will produce the ultimate Pentium 4 sloth routine that will show just how lousy the micro-architecture really is. And then the AMDroids will find a logical way of explaining how that routine will be "common" in a lot of real life applications.

wbmw
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